Holographic virtual assistant

ABSTRACT

Implementations are directed to methods for providing an enhanced encounter via a holographic virtual assistant, including detecting, by one or more processors, an encounter request from a user, selecting a first encounter including a first holographic representation and a first dialog output, providing the first encounter for presentation to the user on the holographic virtual assistant, receiving, from the user, a first user reaction, the first user reaction including a first user dialog input and a first user engagement input, and training, using the first user reaction, a conversational goal model.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional Application Ser.No. 62/694,219 filed on Jul. 5, 2018, and of U.S. ProvisionalApplication Ser. No. 62/694,177 filed on Jul. 5, 2018, which areincorporated herein by reference.

TECHNICAL FIELD

This specification generally relates to computer-based techniques forproviding an enhanced user encounter with a holographic virtualassistant.

BACKGROUND

A virtual assistant can provide information and guidance throughinteractive communications with a user. Interactive communications caninclude a simulated human assistant, including a representation of aperson, to facilitate more realistic communications between the user andthe virtual assistant.

SUMMARY

This specification describes, among other things, techniques for usinguser-provided dialog, contextual clues, and environmental factors toprovide an enhanced encounter via a holographic virtual assistant. Moreparticularly, implementations of the present disclosure are directed touser interactions with a holographic virtual assistant to provideinformation and/or guidance to the user. The holographic virtualassistant can communicate with the user via dialog-based conversation aswell as holographic representations (e.g., maps, faces, objects, etc.)to enhance the user's understanding of the information and/or guidanceprovided. User-based contextual clues and user-provided dialog can beutilized by the holographic virtual assistant to enhance the informationand/or guidance provided by the virtual assistant to the user.

Virtual assistants (e.g., chatbots) can be utilized by mediacontent/entertainment websites, messaging platforms, and customerservice providers. Through dialog-based simulated conversations, avirtual assistant can provide a range of automated assistance to a user,where the virtual assistant solicits one or more inputs from the user(e.g., in the form of a question) and process the user responses toprovide additional solicitations, and/or take a particular action (e.g.,provide recommended content).

In general, one embodiment of the subject matter of this specificationcan include a method for providing an enhanced encounter via aholographic virtual assistant, the method including detecting, by one ormore processors, an encounter request from a user, selecting a firstencounter including a first holographic representation and a firstdialog output, providing the first encounter for presentation to theuser on the holographic virtual assistant, receiving, from the user, afirst user reaction, the first user reaction including a first userdialog input and a first user engagement input, and training, using thefirst user reaction, a conversational goal model. Other embodiments ofthis aspect include corresponding systems, apparatus, and computerprograms, configured to perform the actions of the methods, encoded oncomputer storage devices.

These and other embodiments may include one or more of the followingfeatures.

In some implementations, the method further includes selecting, based onthe first user reaction and using the conversation goal model, a secondencounter including a second holographic representation and a seconddialog output and providing, the second encounter for presentation tothe user on the holographic virtual assistant.

In some implementations, the encounter request and the first userreaction include one or more contextual clues, e.g., non-verbal cues. Anon-verbal cue can be one of i) a gesture, ii) a mood expression, iii)user demographic data.

In some implementations, the conversational goal model includes a humanmodel for the user. In some implementations, the holographic virtualassistant is provided for presentation on a virtual assistant kiosk.

In some implementations, the method further includes detecting, in anencounter area encompassing the virtual assistant kiosk, the encounterarea including the user, an object, determining, based on the object inthe encounter area, a conversational goal, and providing, to theconversational goal model, the conversation goal based on the objectdetected in the encounter area.

In general, another embodiment of the subject matter of thisspecification can includes a system including one or more sensors, aholographic projector, one or more processors, and a computer-readablestorage device coupled to the one or more processors and havinginstructions stored thereon which, when executed by the one or moreprocessors, cause the one or more processors to perform operations forproviding an enhanced encounter via a holographic virtual assistant,including detecting an encounter request from a user, selecting a firstencounter including a first holographic representation and a firstdialog output, providing the first encounter for presentation to theuser on the holographic virtual assistant, receiving, from the user, afirst user reaction, the first user reaction including a first userdialog input and a first user engagement input, and training, using thefirst user reaction, a conversational goal model.

In general, another embodiment of the subject matter described in thisspecification can includes a method for providing an enhanced encountervia a holographic virtual assistant, the method being executed by one ormore processors and including detecting, by the one or more processors,an encounter request from a user, determining an environmental factorfor the holographic virtual assistant, selecting, based on theenvironmental factor, a first encounter. the first encounter including afirst holographic representation and a first dialog output, andproviding the first encounter for presentation to the user on aholographic virtual assistant, receiving, from the user, a first userreaction, the first user reaction including a first user dialog inputand a first user engagement input, determining, based on the first userreaction and the environmental factor, a second encounter, the secondencounter including a second holographic representation and a seconddialog output, and providing the second encounter for presentation tothe user on the holographic virtual assistant. Other embodiments of thisaspect include corresponding systems, apparatus, and computer programs,configured to perform the actions of the methods, encoded on computerstorage devices.

These and other embodiments may include one or more of the followingfeatures. In some implementations, the environmental factor is based inpart on a location of the virtual assistant kiosk. The environmentalfactor can be based in part on a position of the user in relation to thevirtual assistant kiosk.

In some implementations, the first holographic representation includeslocation information based on the environmental factor.

In general, another embodiment of the subject matter of thisspecification can includes a system including one or more sensors, aholographic projector, one or more processors, and a computer-readablestorage device coupled to the one or more processors and havinginstructions stored thereon which, when executed by the one or moreprocessors, cause the one or more processors to perform operations forproviding an enhanced encounter via a holographic virtual assistant,including detecting an encounter request from a user, determining anenvironmental factor for the holographic virtual assistant, selecting,based on the environmental factor, a first encounter, the firstencounter including a first holographic representation and a firstdialog output, and providing the first encounter for presentation to theuser on a holographic virtual assistant, receiving, from the user, afirst user reaction, the first user reaction including a first userdialog input and a first user engagement input, determining, based onthe first user reaction and the environmental factor, a secondencounter, the second encounter including a second holographicrepresentation and a second dialog output, and providing the secondencounter for presentation to the user on the holographic virtualassistant.

It is appreciated that methods in accordance with the present disclosurecan include any combination of the aspects and features describedherein. That is, methods in accordance with the present disclosure arenot limited to the combinations of aspects and features specificallydescribed herein, but also include any combination of the aspects andfeatures provided.

Some implementations of the subject matter described herein can, incertain instances, achieve one or more of the following advantages.Contextual clues (e.g., verbal clues, non-verbal clues, user location,user demographics, etc.) from a user and the user's surroundings can beutilized to inform the encounters between the user and the holographicvirtual assistant system. Dynamic encounters including dialog processesand holographic representations can be generated one or more interactionmodels, where the interaction models are trained using neural networksusing conversational metrics. Conversational metrics including usermood, satisfaction with the conversation, etc. can be used to measureand assess conversational goals and the dynamic encounters can beadjusted accordingly.

The holographic virtual assistant system can account for theenvironmental factors such as location and context in which the user isinteracting with the holographic virtual assistant system to provideinformation/guidance that is relevant to a current situation of theuser. The holographic virtual assistant system may interpret aconversational goal contextually, e.g., to the user's surroundings, inorder to provide more effective information/guidance to the user. Forexample, the holographic virtual assistant system can detect a usegesture in relation to the user's environment and respond accordingly,improving the effectiveness of the exchange between the user and theholographic virtual assistant system.

The details of one or more implementations of the present disclosure areset forth in the accompanying drawings and the description below. Otherfeatures and advantages of the present disclosure will be apparent fromthe description and drawings, and from the claims.

BRIEF DESCRIPTION OF DRAWINGS

FIGS. 1A and 1B depict example operating environment for a virtualassistant system.

FIG. 2 is a flow diagram of an example process for operation of avirtual assistant system.

FIG. 3 is a flow diagram of another example process for operation of thevirtual assistant system.

FIG. 4 is a flow diagram of another example process for operation of avirtual assistant system.

FIG. 5 is a flow diagram of another example process for operation of thevirtual assistant system.

FIG. 6 is a diagram of an example computing system that may perform oneor more of the disclosed computer-implemented processes.

DETAILED DESCRIPTION

Implementations of the present disclosure are generally directed towardstechniques for using user-provided dialog, contextual clues, andenvironmental factors to provide an enhanced encounter via a holographicvirtual assistant. More particularly, implementations of the presentdisclosure are directed to user interactions with a holographic virtualassistant to provide information and/or guidance to the user. Theholographic virtual assistant can communicate with the user viadialog-based conversation as well as holographic representations, e.g.,maps, faces, objects, etc., to enhance the user's understanding of theinformation and/or guidance provided.

FIG. 1A depicts example operating environment 100 for a holographicvirtual assistant system 102 including a virtual assistant kiosk 104.The holographic virtual assistant system 102 may be implemented on oneor more different servers in communication directly or over a computernetwork, including an encounter detector 106, and encounterinterpretation module 108, an encounter selection module 110, and anencounter generator 112, the operations of which are described in moredetail below with reference to FIG. 2. A computer network can be a localarea network (LAN), the Internet, or a combination thereof, connecting aserver computer to the virtual assistant kiosk 104. The holographicvirtual assistant system 102 can be implemented on a local server thatis included as a part of the virtual assistant kiosk 104.

The virtual assistant kiosk 104 can include one or more sensors 114including one or more video cameras, audio recording devices, e.g.,microphones, motion detectors, IR sensors, WiFi/Bluetooth receivers,three-dimensional depth sensors, e.g., LIDAR, or the like. The one ormore sensors 114 can be used by the holographic virtual assistant system102 to interact with a user 116. One or more of the sensors 114 can beused to detect a presence of a user 116 in the proximity, e.g., withinan encounter area 118, of the virtual assistant kiosk 104 and theholographic virtual assistant system 102 can determine that the user 116is requesting an encounter with the virtual assistant kiosk 104.

In some implementations, the encounter area 118 includes a perimeterencompassing the virtual assistant kiosk 104. The encounter area 118 canbe a geometric shape extending around, e.g., defining a perimetersurrounding, the virtual assistant kiosk 104. For example, the encounterarea is a radius extending 5 feet around the virtual assistant kiosk104. In another example, the virtual assistant kiosk 104 is located witha portion of the kiosk next to a barrier, e.g., against a wall, suchthat the encounter area 118 includes a region that is around a part ofthe virtual assistant kiosk 104.

The virtual assistant kiosk 104 includes one or more of a holographicprojector 120 for displaying a holographic representation 122 and audioplayback devices 124, e.g., speakers, for providing audio output to theuser 116. A holographic representation 122 can include, for example, ahuman face/head avatar, a map, an object, e.g., a clothing item, a fooditem, a book, a furniture item. The holographic representation 122 canbe animated to interact with the user 116. In one example, a holographicrepresentation of a human face/head avatar can be animated to appear tobe conversing with the user 116. In another example, a holographicrepresentation 122 of a map can be animated to indicate locationinformation, e.g., give directions, indicate a location of interest.

In some implementations, the virtual assistant kiosk 104 can includeother devices or methods to facilitate user-input, for example, akeyboard, a payment processing device such as a credit card reader, anoptical scanner such as an OCR reader or a barcode reader, or agraphical user interface (GUI). A virtual assistant kiosk 104 that islocated in a supermarket can include a barcode scanner for reading tagson products or coupons provided by the user to locate products, or tomake recommendations of other products. In one example, the user scans apackaged steak and the virtual assistant system 102 can recommend abottle of wine to pair with the steak. In another example, the virtualassistant system 102 can help the user find the product referenced by acoupon.

The virtual assistant system 102 can include multiple differentconversational goal models 126. Each conversational goal model 126 candefine a conversational goal that the holographic virtual assistantsystem 102 determines to accomplish through an encounter with user 116.A conversational goal is a desired outcome for the encounter between theholographic virtual assistant system 102 and the user 116.Conversational goals can include providing a user with help to purchasean item, directions to a location, suggested activities, genericinformation, or the like. Conversational goals can also be to make auser 116 smile, laugh, or express another emotion. The conversationalgoal models 126 can be trained through encounters between the virtualassistant system 102 and user 116, where neural networks and/or machinelearning, e.g., reinforcement learning, can be used to refine theconversational goal models 126. The conversational goal models 126 caninclude one or more of a human model and/or an object model, where thehuman/object models can be used to identify users and objects in theencounter area 118. For example, a user can be a tourist, a frequentairline flyer, and/or a shopper of athletic gear, and an object can be ashoe, bag, suitcase, headphones, and/or cane.

In some implementations, a conversational goal model 126 can includeuser demographics, e.g., age, gender, physical appearance, etc. Forexample, as depicted in FIG. 1A, a conversational goal model 126 caninclude a conversational goal of assisting a user 116 to find theclosest food court in an airport, and may use one or more userdemographics, e.g., age of the user 116, to provide information ofairport bars. In another example, as depicted in FIG. 1B, aconversational goal model 126 can include a conversational goal ofassisting a user 138 in purchasing a pair of women's shoes, and may useone or more user demographics to make suggestions of what shoes might beof interest to the user 138. User demographics in this example can begender and age of the user 138, and the intent of the user 138 can be tofind out which shoes may be on sale at the particular store.

In some implementations, the conversational goal model 126 includes oneor more objects 134 within the encounter area 118. For example, asdepicted in FIG. 1A, a conversational goal model 126 can include anobject 134 that is a piece of luggage where the piece of luggage 134 caninform the conversational goal, e.g., “where is ticketing?” or “where isa baggage drop for my airline?”. In another example, as depicted in FIG.1B, a conversational goal model 126 can include an object 140 that is ashopping bag where a feature of the object 134 can be used by theconversational model to inform the conversational goal, e.g., “where canI return the shoes I purchased?” or “where can I buy a pair of athleticshorts?”.

The virtual assistant system 102 can select a particular conversationalgoal model 126 for an encounter with a user 116 depending on contextualclues detected by the encounter interpretation module 108. Contextualclues can be verbal cues, non-verbal cues, and/or environmental factors.

The virtual assistant system 102 includes one or more databases,including a contextual knowledge base 128, a dialog knowledge base 130,and a holographic representation database 134. One or more of thedatabases for the virtual assistant system 102 can be stored locally,e.g., in a local server that is part of the virtual assistant kiosk 104,and/or stored in a cloud-based server. Though depicted in FIG. 1 asthree distinct databases, the data contained in each of the contextualknowledge base 128, the dialog knowledge base 130, and the holographicrepresentation database 134 are interrelated and may be stored as partof fewer than the listed databases.

The contextual knowledge base 128 includes data relating to contextualclues used by the encounter interpretation module 108 to determine oneor more contextual clues from environmental factors and/or the user 116during an encounter. For example, the contextual knowledge base 128 caninclude data relating to user gestures, mood expression, userdemographics, and the like. Contextual clues can include one or moreenvironmental factors, where an environmental factor describes theenvironment surrounding the virtual assistant kiosk 104, the user 116,and the encounter area 118.

In some implementations, the contextual clues include an object 134 thatis identified by the encounter detector with the user 116, e.g., insidethe encounter area 118. For example, an object can be a backpack, astore brand shopping bag, a suitcase, a pet, a stroller, or the like.The user may be, for example, holding or wearing the object 134. In theexample depicted in FIG. 1A, the object 134 is a suitcase that the user116 is detected to be holding while the user 116 is within the encounterarea 118.

In some implementations, the contextual clues include environmentalfactors. Environmental factors can be, for example, bright vs. darklighting schemes, day vs. night, loud vs. quiet ambient sounds, a numberof users surrounding the user 116 that is interacting with the kiosk,ambient conditions and/or weather surrounding the kiosk, and the like.For example, if the virtual assistant system 102 detects using imagedata from one or more cameras that there is a line of users waiting tointeract with the kiosk, it may select a more brief dialog interactionwith the user 116. In another example, if the virtual assistant system102 detects a loud ambient background it may rely on more non-verbalmethods for providing information rather than audible dialog, e.g., moreholographic information instead of verbal dialog.

The dialog knowledge base 130 stores a set of dynamically selectabledialog and/or natural language dialog by the encounter interpretationmodule 108. The dialog knowledge base 130 includes text strings that canbe combined by the encounter selection module 110 to constructdynamically selectable dialog. The dynamically selectable dialog can becustomized based, for example, on a user reaction, e.g., the user inputdialog, and/or on one or more contextual clues and/or environmentalfactors. Dynamically selectable dialog can be customized, for example,in tone, pitch, dialog style, language, emotion based on one or more ofthe contextual clues. For example, dialog output selected forpresentation to a child may be simplified in content by using smallerwords and tone by using a lilting tone appealing to children. In anotherexample, dialog output selected for presentation to an adult businessmanmay include a large vocabulary and sterner tone. The dynamicallyselectable dialog can be trained using unsupervised learning, e.g., byneural networks and/or machine learning, using feedback from one or moreusers interacting with the virtual assistant system 102. In anotherexample, one or more of user reactions, contextual clues, andenvironmental factors detected responsive to dialog provided by thevirtual assistant system 102 to achieve a particular goal can refinedialog provided to a user with a same particular goal in futureencounters. In one example, reinforcement learning can be used todevelop the dynamically selectable dialog. In another example, sequenceto sequence deep neural networks can be used for training thedynamically selectable dialog. In yet another example, genetic evolutionalgorithms for self-learning and enhancement can be used to train theencounter interpretation module for selecting the dynamically selectabledialog.

The holographic representations database 132 includes a set ofholographic representations that are selectable by the encounterselection module 110 to be displayed by the holographic projector 120 inthe virtual assistant kiosk 104. The set of holographic representations122 stored in the holographic representations database 132 can depend,for example, on a location of the virtual assistant kiosk 104. e.g.,airport, shopping mall, amusement park, and/or an application of thevirtual assistant kiosk 104, e.g., assist with direction, assist withshopping. For example, a virtual assistant kiosk 104 located in anairport may have a set of holographic representations stored in aholographic representations database 132 that include a face/head humanavatar hologram for conversing with a user 116 and a holographicthree-dimensional map of the airport terminal for providing directionsto the user 116 on the virtual assistant kiosk 104. In another example,a virtual assistant kiosk 104 located in a shoe store may have a set ofholographic representations 122 stored in a holographic representationsdatabase 132 that include one or more of the shoes to display that canbe used to assist a user 116 in finding a particular product sold in thestore.

In some implementations, appearance including one or more physicalattributes of a holographic representation 122 can be modified based inpart on the contextual clues. For example, a head/face avatarholographic representation can be customized, e.g., altered inappearance, based on the user demographics of the user 116. A face/headavatar can be presented at different ages, genders, or the likedepending on the demographics of the user 116.

In the example of FIG. 1A, the virtual assistant kiosk 104 is presentinga human head/torso holographic representation 122 to provide gateinformation in an airport, where the human head/torso holographicrepresentation 122 was selected by the encounter selection module 110from a holographic representation database 132 for presentation by thevirtual assistant kiosk 104. Further details relating to the selectionof a particular holographic representation is discussed below withreference to FIG. 2.

FIG. 1B depicts another example operating environment 150 for a virtualassistant system 102. In the example of FIG. 1B, the virtual assistantkiosk 104 is presenting a shoe holographic representation 136 to provideproduct information in a store, where the shoe holographicrepresentation 136 was selected by the encounter selection module 110from a holographic representation database 132 for presentation by thevirtual assistant kiosk 104. The user 138 is detected by the encounterdetector 106 as having a shopping bag 140 within the encounter area 142.

FIG. 2 is a flow diagram of an example process 200 for operation of avirtual assistant system. An encounter request is detected from a user(202). In the example operating environment 100 of the virtual assistantsystem 102 depicted in FIG. 1A, a user 116 with a suitcase 134 entersthe encounter area 118. An encounter request, e.g., the user 116 and theuser's suitcase 134 enter into the encounter area 118, can be detectedby the encounter detector 106 using data collected from sensors 114using, for example, image data from a video camera. The encounterrequest is an initiation of a dialog process between the user 116 andthe virtual assistant system 102. The encounter request, for example,can be a user 116 entering into the encounter area 118. The encounterrequest can be a user-provided input to the virtual assistant system 102via the virtual assistant kiosk 104, for example, a user greeting thevirtual assistant kiosk, e.g., “Hello,” making a statement, e.g., “Ineed help,” or asking a question, e.g., “Where is the nearest coffeeshop?”

An encounter interpretation module 108 receives the encounter requestfrom the user 116 and can determine a conversational goal from thecontextual knowledge base 128 for the virtual assistant system 102. Aconversational goal is a goal that the user has when initiating anencounter with the virtual assistant system 102. For example, aconversational goal can be to receive general information, e.g.,directions, descriptions of products, or receive recommendations, e.g.,suggested purchase options, sight-seeing suggestions.

A conversational goal can be determined, in part, by natural languageprocessing of the user-provided input. The user-provided input may becompared to the dialog knowledge base 130 to determine the user intent.

The conversational goal can be determined based in part on one or morecontextual clues from the contextual knowledge base 128. Contextualclues can include user demographics, location of the virtual assistantkiosk 104 relative to its surroundings, an object 134 in the encounterarea 118, or the like. For example, contextual clues for a user 116 canbe “male”, “middle-aged”, “business casual clothing”, “a suitcase”, and“in an airport terminal”, where the conversational goal may be “assistuser to find a nearby sports bar in the terminal” or “assist user tofind Delta Admiral's club.” In another example, contextual clues for auser 116 can be “female,” “young adult,” “trendy clothing,” “a shoppingbag,” and “in the shopping mall,” where the conversational goal may be“help user 116 to find running shoes” or “give user 116 directions tothe nearest coffee shop.”

Based in part on the conversational goal, a conversational goal model126 can be selected for the encounter between the virtual assistantsystem 102 and the user 116. In some implementations, the conversationalgoal model 126 can be selected based on one or more user demographics,objects 134 in the encounter area 118, or a combination thereof. Forexample, a conversational goal model 126 can be selected where theconversational goal is finding a nearby location to eat in an airportfor a male user 116 who is above legal age, e.g., an airport pub.

A first encounter is selected including a first holographicrepresentation and a first dialog output (204). The encounter selectionmodule 110 can select the first holographic representation from theholographic representation database 132 and can select the first dialogoutput from the dialog knowledge base 130.

In some implementations, the selection of the first holographicrepresentation depends on the selected first dialog output and viceversa. For example, the first holographic representation can be a humanhead/face avatar that is animated such that it appears to speak thefirst dialog output. The first encounter can be, for example, a greetingfrom the virtual assistant system 102 to the user 116 where the virtualassistant system 102 presents a human face/head holographicrepresentation 122 in the virtual assistant kiosk 104 such that theholographic representation 122 appears to speak the first dialog output,e.g., “Hello, how can I help you today?”

In some implementations, the first encounter can be selected in partbased on the determined conversational goal. For example, if aconversational goal is determined to be seeking directions, the firstencounter can be initiated with a holographic representation 122 of amap and/or one or more gestures that provide directional information.

In some implementations, the first encounter can be selected in partbased on a conversational goal model 126 that is selected for theencounter between the virtual assistant system 102 and the user 116. Theconversational goal model 126 can be selected based on a conversationalgoal determined by the encounter interpretation module 108 and based onone or more contextual clues. The conversational goal model 126 mayinclude one or more conversational goals, e.g., “get directions,”“purchase a product,” “learn more about an event,” “get a recommendationfor a place to eat.” For example, for a conversational goal model 126where the conversational goal is “get information about my flight,” thefirst encounter can include a holographic representation 122 of a humanface/head that is animated to speak the first dialog output thatincludes gate information, departure times, flight delays, etc.

The first encounter is provided for presentation to the user 116 on thevirtual assistant kiosk 104 (206). Presentation of the first encountercan be a relaying of a piece of information to the user 116, queryingthe user 116 for input, e.g., asking a question, or a combinationthereof. The presentation of the first encounter is displayed forviewing by the user 116 in the virtual assistant kiosk 104 and caninclude an animation of the first holographic representation 122. Forexample, the animation can be a human head/face holographicrepresentation 122 speaking the first dialog output. In another example,the animation can be a map holographic representation 122 where a routeto a location of interest is indicated.

A first user reaction from the user 116 is received, where the firstuser reaction includes a first user dialog input and a first userengagement input (208). The first user reaction can be determined fromdata collected by the one or more sensors 114. The first user reactionincluding data collected from one or more sensors can be aggregated andused as input to a neural network. The neural network can receive inputdata or one or more types, e.g., image, audio, etc., and determine anext action, e.g., a next dynamically selected dialog output, a nextholographic image, to provide to the user 116 by the virtual assistantsystem 102.

A user dialog input is a verbal communication by the user 116 to thevirtual assistant system 102. The user dialog input can be a verbalcommunication responsive to the first dialog output from the virtualassistant system 102 or unprompted. The user dialog input can bereceived by the virtual assistant system 102 and processed using naturallanguage processing by the encounter interpretation module 108.

A user engagement input is a non-verbal communication by the user 116 tothe virtual assistant system 102, where the user 116 is relayinginformation to the virtual assistant system 102. Forms of non-verbalcommunication can include, but are not limited to, gestures, userposition relative to the virtual assistant kiosk 104, attentiveness,mood, or the like. Non-verbal communication can be determined from datacollected by the sensors 114 and processed, for example, usingmachine-learning and/or software analytics to perform facialrecognition, gesture recognition, and/or mood recognition.

The user engagement input is responsive to the first encounter. Forexample, a user who is not interested in the provided first encountermay back away from the virtual assistant kiosk 104, shift eye gaze awayfrom the virtual assistant kiosk 104, cross their arms, or otherwiseshow disinterest. In another example, a user who is interested in theprovided first encounter may step forward to approach the virtualassistant kiosk 104, look intently at the virtual assistant kiosk 104,wave or gesture positively at the virtual assistant kiosk, or otherwiseshow interest.

A conversational goal model is trained using the first user reaction(210). The conversational goal model 126 can be trained using positivefeedback from the first user engagement input from user 116, e.g., toreinforce the conversational goal model, negative feedback from thefirst user engagement input from the user 116, e.g., to retrain theconversational goal model, or a combination thereof. For example, aconversational goal model 126 can include a conversational goal “buyshoes” for a female user 138 that is dressed in business casualclothing. The conversational goal model 126 of the encounter maydetermine that the virtual assistant system 102 should recommend a pairof high heels to the user 138. The first user reaction can include theuser 138 providing negative feedback, e.g., “no I don't wear heels,” orpositive feedback, e.g., “I love those shoes!”, which can cause theconversational goal model to retrain or reinforce.

In some implementations, a personalized conversational goal model 126can be trained for a particular user 116. The conversational goal model126 can include details that are specific to the particular user 116,e.g., purchase history, likes/dislikes, frequent information requests,etc. The personalized conversational goal model 126 can be storedlocally at a virtual assistant kiosk 104 or on a cloud-based serveraccessible, for example, by multiple different virtual assistant kiosks104. In one example, multiple virtual assistant kiosks 104 are deployedaround a shopping center, where each virtual assistant kiosk 104 canaccess a personalized conversational goal model 126 for a particularuser 116. When one of the virtual assistant kiosks 104 detects anencounter request from the particular user 116, it can access thepersonalized conversational goal model 126 for the particular user 116.The particular user 116 may desire to make multiple purchases and visitthe food court around the shopping center, such that the personalizedconversational goal model 126 can include learned preferences, previouspurchases, conversational details for which the personalizedconversational goal model has been trained through encounters with theparticular user 116.

In some implementations, a conversational goal model 126 includes ahuman model, an object model, or a human model and an object model. Ahuman model can include gestures, demographic information, moodexpression, or other characteristics. An object model can includephysical characteristics, e.g., color, size, movement, expectedorientation, e.g., a backpack is worn on a user's back, a suitcase isrolled around next to a user, or other features of the object defined bythe object model. The human model and object model can assist thevirtual assistant system 102 to determine a conversational goal for theuser. For example, an object model for an object 140 can be applied to auser 138 such that the virtual assistant system 102 identifies theobject as a shopping bag and determines that the user 138 is engaged inthe act of shopping for items. In another example, a human model for achild can be applied to a user 116 such that the virtual assistantsystem 102 identifies the user 116 as a child and selects a firstencounter accordingly. e.g., uses simpler dialog output, makeschild-appropriate recommendations.

Based on the first user reaction and using the conversational goal model126, a second encounter is selected, where the second encounter includesa second holographic representation and a second dialog output (212).The second encounter can be selected, in part, based on the first userreaction. For example, the second encounter can answer a question madeby the user 116 in the first user reaction and provide additionalinformation in response to a request for more information.

In some implementations, the second holographic representation 122 canbe of a same type as the first holographic representation 122 but isanimated to provide a different dialog in the second dialog output. Forexample, a face/head holographic representation can be the first andsecond holographic representation 122, where the face/head holographicrepresentation 122 is animated to provide a first dialog output in afirst encounter and is animated to provide a second dialog output in asecond encounter.

In some implementations, the second holographic representation 122 canbe a different type of holographic representation 122, where thedifferent holographic representation 122 is selected based on, forexample, a user 116 requesting directions. For example, a face/headholographic representation can be the first holographic representation,where the face/head holographic representation is animated to provide afirst dialog output, e.g., “What are you looking for today?” in a firstencounter and a map holographic representation can be the secondholographic representation, where the map indicates a particularlocation while an audible dialog is provided, e.g., “The bathrooms areto your left.”

The second encounter is provided for presentation to the user 116 on thevirtual assistant kiosk 104 (214). Presentation of the second encountercan be a relaying of a piece of information to the user 116, queryingthe user 116 for input, or the like. The presentation of the secondencounter is displayed for viewing by the user 116 in the virtualassistant kiosk 104 and can include an animation of the secondholographic representation 122. For example, the animation can be ahuman head/face holographic representation 122 speaking the seconddialog output. In another example, the animation can be a mapholographic representation 122 where a route to a location of interestis indicated. In yet another example, the animation can be a 360° viewof a shoe product that is being presented to the user 116 for purchase.

FIG. 3 is a flow diagram of another example process 300 for operation ofthe virtual assistant system 102. Contextual clues for an encounterbetween the virtual assistant system 102 and a user 116 can include, forexample, verbal clues, non-verbal clues, user location, etc. Thecontextual clues can be included in the encounter request, in the firstuser reaction responsive to the first encounter, or a combinationthereof. For example, an encounter between the virtual assistant system102 and a user 116 in an international terminal of an airport caninclude a language spoken by the user, the type of luggage the user iscarrying, and the placement of the virtual assistant kiosk 104 next to afood court.

In some implementations, a particular conversational goal model isselected for the encounter request based on one or more user contextualclues (302). In the example of the user 116 in the internationalterminal of the airport, the particular conversational goal model can beselected that includes a conversational goal of finding food forEnglish-speaking users.

Based on the conversational goal model 126, a first encounter isselected (304). Continuing with the example of the user in theinternational terminal of the airport, the first encounter can include aholographic representation 122 of a map of the nearby restaurant optionsand a first dialog output asking the user for a type of food they areinterested in eating.

A first user reaction is received responsive to the first encounter(306) including one or more user contextual clues. The first userreaction can include a first user dialog input and a first userengagement input. The first user reaction can include one or morecontextual clues, for example, verbal and/or non-verbal cues. Anon-verbal cue can include, for example, a gesture, a mood expression,and/or information related to the user's demographic. In the example ofthe user 116 in the international terminal of the airport, a non-verbalcue can be a user 116 stepping forward towards the virtual assistantkiosk 104, e.g., indicating interest in conversing with the virtualassistant system 102. In another example, a non-verbal cue can be a user116 pointing in a particular direction, e.g., querying for informationabout a location in the particular direction.

In some implementations, an object 134 can be detected in the encounterarea 118. A conversational goal model including a conversation goal canbe selected (e.g., by the encounter selection module 110) based in parton the object 134 in the encounter area 118. For example, the virtualassistant system 102 can detect a shopping bag 140 in encounter area142, as depicted in FIG. 1B, and determine that a conversational goal isto assist the user 138 in finding an item for purchase. In anotherexample, an object 134 can be a suitcase in the encounter area 118,where a conversational goal may be to find ticketing at an airport.

The particular conversational goal model 126 is trained for the user 116using the first encounter and the first user reaction, including the oneor more user contextual clues (308). The particular conversational goalmodel 126 can be trained using user feedback from the encounter betweenthe user 116 and the virtual assistant system 102 to create apersonalized conversational goal model 126 for the user 116. Forexample, the virtual assistant system 102 may train a conversationalgoal model 126 that a user 116 wearing a business suit in an airportterminal is interested in finding a nearest coffee vendor. Theparticular conversational goal model 126 can be applied in a subsequentencounter between the user 116 and the virtual assistant system 102, orany user 116 having similar contextual clues. For example, a particularconversational goal model 126 can be “recommendations for purchasingshoes for a middle-aged woman” and can be applied to an encounter by thevirtual assistant system 102 for a second encounter between a same user138 and the virtual assistant system 102.

In some implementations, the particular conversational goal model 126that has been trained using one or more encounters with users 116 can beapplied to a subsequent encounter between a user 116 that is determinedto have contextual clues 128 that correspond to the particular orsite-specific conversational goal model 126. In one example, aparticular conversational goal model 126 that has been trained using oneor more encounters with traveling businessmen in an airport terminal canbe selected, e.g., by the encounter interpretation module 108, usingcontextual clues 128 for a new user 116.

In some implementations, a conversational goal model 126 is trained fora specific interval of time using unsupervised training. For example, aconversational goal model 126 may be trained for a period of a week. Insome implementations, a conversational goal model 126 is trained for aspecific number of encounters between a user 116 and the virtualassistant system 102.

In some implementations, a virtual assistant kiosk 104 can collect datarelated to user gender, age, mood, and other user-information over aperiod of time to assist with data analytics for a business using thevirtual assistant kiosk 104. Pattern analysis and other data analyticscan be performed on the collected data to provide further serviceenhancement to users frequenting the business.

In some embodiments, a virtual assistant kiosk 104 can include medicaldevice sensors, e.g., heart rate monitors, blood pressure, infraredcameras, etc., to provide diagnostic assessment of a user 116 that isinteracting with the virtual assistant kiosk 104.

In some embodiments, a virtual assistant kiosk 104 can be a wineassistant that helps a user select a wine according to, for example, theuser's tastes and needs. In one example, a wine assistant virtual kioskcan begin an interaction with a user by introducing itself as a wineexpert and queries the user about menu options, upcoming occasions forthe purchase of wine, or the like. The wine assistant virtual kiosk canverify an availability of a requested wine and/or wines it determines tosuggest for purchase to the user, e.g., by checking an availability ofthe wine in a store inventory or a vending system inventory. Based on aselected recommendation and availability of the recommended wine, thewine assistant virtual kiosk may provide the recommendation including aholographic image of the wine and/or other details, e.g., a history ofthe vintage, place of origin, recommended pairing, pricing, etc., to theuser. The wine assistant virtual kiosk may then provide directionsincluding displaying a holographic map to indicate a location of therecommended bottle on a shelf within a store.

In some implementations the wine assistant virtual kiosk can include avending machine system for the products recommended, such that it candispense a selected wine bottle based on a user interaction with thewine assistant virtual kiosk.

FIG. 4 is a flow diagram of another example process 400 for operation ofa virtual assistant system. An encounter request is detected from a user(402). In the example operating environment 100 of the virtual assistantsystem 102 depicted in FIG. 1A, a user 116 with a suitcase 134 entersthe encounter area 118. An encounter request (e.g., the user 116 and theuser's suitcase 134 enter into the encounter area 118) can be detectedby the encounter detector 106 using data collected from sensors 114. Asdescribed in further detail with reference to step 202 of FIG. 2, theencounter request is an initiation of a dialog process between the user116 and the virtual assistant system 102. For example, a user pointingin a direction down a terminal at an airport and asking “is my flightdeparting from a gate down that way?”

An encounter interpretation module 108 receives the encounter requestfrom the user 116 and determines an environmental factor for the virtualassistant system 102 (404). Environmental factors can includeinformation related to the orientation and/or position of the user 116relative to the virtual assistant kiosk 104 and a location of thevirtual assistant kiosk 104 relative to its environment. For example, anenvironmental factor can be the position of the virtual assistant kiosk104 at a departure gate inside an airport terminal. In another example,an environmental factor can be that the user 116 is standing to theright of the virtual assistant kiosk 104.

In some implementations, the contextual knowledge base 128 includes mapsof a geographic area of interest to the virtual assistant kiosk 104,where a map can include information about locations of interest in anarea near the virtual assistant kiosk 104. For example, a virtualassistant kiosk 104 located in an airport terminal can access a map ofthe airport terminal from the contextual knowledge base 128 includinglocations of the gates, restaurants, bathrooms, shops, etc. In anotherexample, a virtual assistant kiosk 104 located in a museum can access amap of the museum from the contextual knowledge base 128 includinglocations of different exhibits, particular works of art, a museumcafeteria, bathrooms, gift shop, etc.

A map and other location information accessible to the virtual assistantsystem 102 in the contextual knowledge base 128 can be used by thevirtual assistant system 102 to interpret the encounter request. Forexample, a user 116 initiating an encounter request at a virtualassistant kiosk 104 in or near a women's clothing store is likelyinterested in assistance purchasing an article of women's clothing. Inanother example, a user initiating an encounter request by asking “whereis the bathroom” is likely interested in a nearest bathroom to thevirtual assistant kiosk 104 receiving the encounter request.

A first encounter is selected based on the environmental factor,including a first holographic representation 122 and a first dialogoutput (406). In one example, an environmental factor is a location ofthe virtual assistant kiosk 104 next to a food court at a shoppingcenter. A first encounter can include a map holographic representationdepicting the food court and a first dialog output solicits a type offood that the user 116 may want to eat, e.g., “What kind of food are youlooking for?”. In another example, an environmental factor is a locationof a user 116 relative to the virtual assistant kiosk 104, where theuser 116 such that a first holographic representation 122 is a face/headavatar which is oriented such the face of the avatar is pointing at theuser, e.g., the avatar is “looking” directly at the user 116.

As described in further detail above with reference to FIG. 2, theselection of the first holographic representation 122 can depend on theselected first dialog output and vice versa. For example, the firstholographic representation can be a human head/face avatar that isanimated such that it appears to speak the first dialog output.

In some implementations, an orientation of the user 116 relative to thevirtual assistant kiosk 104 changes during the encounter, e.g., the user116 shifts around the encounter area 118. The encounter interpretationmodule 108 can track a relative position of the user 116 to the virtualassistant kiosk 104 and update the environmental factor accordingly,e.g., track the user moving from in front of the kiosk to one side ofthe kiosk. The updated environmental factor can be used to select aholographic representation 122. In one example, the updated position ofthe user 116 relative to the virtual assistant kiosk 104 can cause theface/head avatar holographic representation to “turn” such that the faceof the face/head holographic representation continues to be positionedtowards the user 116.

In some implementations, the first encounter can be selected in partbased on a conversational goal model 126 that is selected for theencounter between the virtual assistant system 102 and the user 116. Anenvironmental factor may affect the selection of the conversational goalmodel 126. For example, a virtual assistant kiosk 104 located at abaggage claim of an airport may select a conversational goal model 126for a user 116 that provides ground transportation information.

The first encounter is provided for presentation to the user 116 on thevirtual assistant kiosk 104 (408). Presentation of the first encountercan be a relaying of a piece of information to the user 116, queryingthe user 116 for input, or a combination thereof. The presentation ofthe first encounter is displayed for viewing by the user 116 in thevirtual assistant kiosk 104 and can include an animation of the firstholographic representation 122. For example, the animation can be ahuman head/face avatar holographic representation 122 speaking the firstdialog output. In another example, the animation can be a mapholographic representation 122 where a route to a location of interestis indicated.

A first user reaction from the user 116 is received, where the firstuser reaction includes a first user dialog input and a first userengagement input (410). As described above with reference to FIG. 2, thefirst user reaction can be determined from data collected by the one ormore sensors 114, e.g., video camera, microphone, etc.

A user engagement input is a non-verbal communication by the user 116 tothe virtual assistant system 102, where the user 116 is relayinginformation to the virtual assistant system 102. Non-verbalcommunication can be determined from data collected by the sensors 114and processed, for example, using machine-learning and/or softwareanalytics to perform facial recognition, gesture recognition, and/ormood recognition. In one example, user 116 is in a terminal of anairport, and a non-verbal cue is the user 116 stepping forward towardsthe virtual assistant kiosk 104, e.g., indicating interest in conversingwith the virtual assistant system 102. In another example, a non-verbalcue can be a user 116 pointing in a particular direction, e.g., queryingfor information about a location in the particular direction.

In some implementations, a specialized neural network (DNN) is used toanalyze each type of non-verbal communication, e.g., one DNN for facialrecognition, another DNN for gesture recognition, another DNN for moodrecognition. A meta neural network can combine results for each one ofthe specialized DNN into the final decision-making process.

A first user engagement input can be interpreted based on theenvironmental factor. A first user engagement that is a gesture can beinterpreted by the virtual assistant system 102 based in part oncontextual clues, for example, where the virtual assistant kiosk 104 andthe user 116 are relative to a location and relative to each other. Forexample, a user 116 gesturing to the right of the virtual assistantkiosk 104 can be interpreted by the virtual assistant system 102 as theuser indicating interest in an object or location that is located in avicinity that is to the right of the virtual assistant kiosk 104. Thevirtual assistant system 102 may access one or more maps of an areasurrounding the virtual assistant kiosk 104 from the contextualknowledge base 128 to determine where the virtual assistant kiosk 104 islocated and determine what the user 116 may be identifying through theuser gesture.

In some implementations, a user 116 can communicate an activity ofinterest, e.g., mime a drink of water, eating food, in the first userengagement input. The virtual assistant system 102 can interpret thefirst user engagement input and access a map including nearby locationsfor the activity of interest, e.g., a map of local bars near the virtualassistant kiosk 104.

Based on the first user reaction and the environmental factor, a secondencounter is selected, where the second encounter includes a secondholographic representation and a second dialog output (412). The secondencounter can be selected, in part, based on the first user reaction andthe environmental factor, or by the first user reaction alone. Thesecond encounter can answer a question posed by the user 116 in thefirst user reaction and provide additional information in response to arequest for more information. For example, a first user reaction caninclude a question “where is the nearest bathroom?” The environmentalfactor can be a location of the virtual assistant kiosk 104 relative toa nearest bathroom facility, and a second encounter can be a holographicrepresentation 122 of a map animated to indicate a location of thenearby bathroom or a holographic representation of a gesturinghand/arrow pointing in the direction of the nearby bathroom.

In another example, a first user reaction can include a question “is theshoe store that way?” and a user gesture indicating a particulardirection. The environmental factor can be a location of the virtualassistant kiosk 104 relative to the store of interest and a location ofthe user 116 relative to the virtual assistant kiosk 104 (e.g., tointerpret which direction the user 116 is pointing). The secondencounter can be a holographic representation 122 of a map animated toindicate a location of the store of interest, a face/head avataranimated to respond “yes” or “no” in response to the user's question, ora pointing arrow/hand in the direction of the store of interest. Asecond encounter can be a holographic representation indicating alocation of an item of interest in the store/shop, display an indicationof availability in the shop or store, or display a notification that a“human sales assistant” has been summoned for support if previouslyrequested information was not available.

In some implementations, the second holographic representation 122 canbe of a same type as the first holographic representation 122 but isanimated to provide a different dialog in the second dialog output. Forexample, a face/head avatar holographic representation can be the firstand second holographic representation 122, where the face/headholographic representation 122 is animated to provide a first dialogoutput in a first encounter and is animated to provide a second dialogoutput in a second encounter.

The second holographic representation may be altered relative to thefirst holographic representation based on the environmental factor. Inone example, the environmental factor is the user 116 moving relative tothe virtual assistant kiosk 104 within the encounter area 118. The firstholographic representation and second holographic representation areboth a face/head avatar where each is positioned to be facing the user116, e.g., follows the user's movements within the encounter area 118.

In some implementations, the second holographic representation 122 canbe a different type of holographic representation 122, where thedifferent holographic representation 122 is selected based on, forexample, a user 116 requesting directions. For example, a face/headavatar holographic representation can be the first holographicrepresentation, where the face/head holographic representation isanimated to provide a first dialog output, e.g., “What are you lookingfor today?” in a first encounter and a map holographic representationcan be the second holographic representation, where the map indicates aparticular location while an audible dialog is provided, e.g., “Thebathrooms are to your left”.

The second encounter is provided for presentation to the user 116 on thevirtual assistant kiosk 104 (414). As described with reference to FIG.2, presentation of the second encounter can be a relaying of a piece ofinformation to the user 116, querying the user 116 for input, or thelike.

FIG. 5 is a flow diagram of another example process 500 for operation ofthe virtual assistant system 102. An object 134 is detected in theencounter area 118 encompassing the virtual assistant kiosk 104 andincluding the user 116 (502). For example, the virtual assistant system102 can detect a shopping bag 140 in encounter area 142, as depicted inFIG. 1B, and determine to assist the user 138 in finding an item forpurchase. In another example, an object 134 can be a suitcase in theencounter area 118, and the virtual assistant system 102 can determineto assist the user 116 to find ticketing at an airport.

In some implementations, one or more objects 134 are recognized by theencounter interpretation module 108 based in part on an environmentalfactor. For example, a bag object 134 may be identified using aconversational goal model 126 as a piece of luggage for a virtualassistant kiosk 104 that is deployed in an airport terminal. In anotherexample, a bag object 134 may be identified as a shopping bag for avirtual assistant kiosk 104 that is deployed in a shopping mall.

Based on the object 134 in the encounter area 118, the first encounteris determined (504). The first encounter is selected to include a firstholographic representation 122 and a first dialog output, where each ofthe first holographic representation 122 and the first dialog output areselected, in part, based on the object 134 that is detected in theencounter area 118. For example, the virtual assistant system 102determines that a user 116 carrying a piece of luggage 134 may beinterested in information related to flight departures, locations ofrestaurants in the terminal, or directions to baggage claim at theairport. A first encounter can include a first dialog output “Can I helpyou find your connecting flight?” and a first holographic representationcan be a face/head avatar or a map of the terminal. In another example,an object may be a shoe that a user 116 has picked up from a displaycase at a store. A first encounter can include a first dialog output“What size are you looking for in that shoe?” and a first holographicrepresentation can be a face/head avatar or a three-dimensionalholographic representation of the particular shoe.

The first encounter is provided to the user 116 for presentation on thevirtual assistant kiosk 104 based on the object 134 detected in theencounter area 118 (506). The first holographic representation 122 canbe presented by a holographic projector on the virtual assistant kiosk104 and the first dialog output is provided through speakers of thevirtual assistant kiosk 104. For example, a first encounter including aface/head avatar can be presented in the virtual assistant kiosk andanimated to speak the first dialog output that is audible throughspeakers 124 of the virtual assistant kiosk 104.

In some implementations, user interactions can be logged and collectedfrom multiple holographic assistants to understand basic key performanceindicators (KPIs), e.g., traffic at particular holographic assistants atspecific locations. Data from multiple holographic assistants can beused to identify patterns on dialogue requests, environment factors, andthe like. Detection of patterns and other analysis can be performed andcan be utilized to further train the models for the dialogue knowledgebase and the contextual knowledge base, as well as the optimization ofthe conversational goals.

In some implementations, a virtual holographic assistant can incorporatea scanned portion of the user interacting with the virtual holographicassistant. In one example, the holographic assistant at a retail storecan scan a foot of the user and superimpose a shoe for sale over thescanned foot to indicate fit and style. In another example, theholographic assistant at a eyeglass store can scan a face of the userand superimpose various styles of frames to show style and fit.

Implementations and all of the functional operations described in thisspecification may be realized in digital electronic circuitry, or incomputer software, firmware, or hardware, including the structuresdisclosed in this specification and their structural equivalents, or incombinations of one or more of them. Implementations may be realized asone or more computer program products, i.e., one or more modules ofcomputer program instructions encoded on a computer readable medium forexecution by, or to control the operation of, data processing apparatus.The computer readable medium may be a machine-readable storage device, amachine-readable storage substrate, a memory device, a composition ofmatter effecting a machine-readable propagated signal, or a combinationof one or more of them. The term “computing system” encompasses allapparatus, devices, and machines for processing data, including by wayof example a programmable processor, a computer, or multiple processorsor computers. The apparatus may include, in addition to hardware, codethat creates an execution environment for the computer program inquestion, e.g., code that constitutes processor firmware, a protocolstack, a database management system, an operating system, or acombination of one or more of them. A propagated signal is anartificially generated signal, e.g., a machine-generated electrical,optical, or electromagnetic signal that is generated to encodeinformation for transmission to suitable receiver apparatus.

A computer program (also known as a program, software, softwareapplication, script, or code) may be written in any appropriate form ofprogramming language, including compiled or interpreted languages, andit may be deployed in any appropriate form, including as a stand-aloneprogram or as a module, component, subroutine, or other unit suitablefor use in a computing environment. A computer program does notnecessarily correspond to a file in a file system. A program may bestored in a portion of a file that holds other programs or data (e.g.,one or more scripts stored in a markup language document), in a singlefile dedicated to the program in question, or in multiple coordinatedfiles (e.g., files that store one or more modules, sub programs, orportions of code). A computer program may be deployed to be executed onone computer or on multiple computers that are located at one site ordistributed across multiple sites and interconnected by a communicationnetwork.

The processes and logic flows described in this specification may beperformed by one or more programmable processors executing one or morecomputer programs to perform functions by operating on input data andgenerating output. The processes and logic flows may also be performedby, and apparatus may also be implemented as, special purpose logiccircuitry, e.g., an FPGA (field programmable gate array) or an ASIC(application specific integrated circuit).

Processors suitable for the execution of a computer program include, byway of example, both general and special purpose microprocessors, andany one or more processors of any appropriate kind of digital computer.Generally, a processor will receive instructions and data from a readonly memory or a random access memory or both. Elements of a computercan include a processor for performing instructions and one or morememory devices for storing instructions and data. Generally, a computerwill also include, or be operatively coupled to receive data from ortransfer data to, or both, one or more mass storage devices for storingdata, e.g., magnetic, magneto optical disks, or optical disks. However,a computer need not have such devices. Moreover, a computer may beembedded in another device, e.g., a mobile telephone, a personal digitalassistant (PDA), a mobile audio player, a Global Positioning System(GPS) receiver, to name just a few. Computer readable media suitable forstoring computer program instructions and data include all forms ofnon-volatile memory, media and memory devices, including by way ofexample semiconductor memory devices, e.g., EPROM, EEPROM, and flashmemory devices; magnetic disks, e.g., internal hard disks or removabledisks; magneto optical disks; and CD ROM and DVD-ROM disks. Theprocessor and the memory may be supplemented by, or incorporated in,special purpose logic circuitry.

To provide for interaction with a user, implementations may be realizedon a computer having a display device, e.g., a CRT (cathode ray tube) orLCD (liquid crystal display) monitor, for displaying information to theuser and a keyboard and a pointing device, e.g., a mouse or a trackball,by which the user may provide input to the computer. Other kinds ofdevices may be used to provide for interaction with a user as well; forexample, feedback provided to the user may be any appropriate form ofsensory feedback, e.g., visual feedback, auditory feedback, or tactilefeedback; and input from the user may be received in any appropriateform, including acoustic, speech, or tactile input.

Implementations may be realized in a computing system that includes aback end component, e.g., as a data server, or that includes amiddleware component, e.g., an application server, or that includes afront end component, e.g., a client computer having a graphical userinterface or a Web browser through which a user may interact with animplementation, or any appropriate combination of one or more such backend, middleware, or front end components. The components of the systemmay be interconnected by any appropriate form or medium of digital datacommunication (e.g., a communication network). Examples of communicationnetworks include a local area network (“LAN”) and a wide area network(“WAN”), e.g., the Internet.

The computing system may include clients and servers. A client andserver are generally remote from each other and typically interactthrough a communication network. The relationship of client and serverarises by virtue of computer programs running on the respectivecomputers and having a client-server relationship to each other.

An example of one such type of computer is shown in FIG. 6, which showsa schematic diagram of a generic computer system 600. The system 600 canbe used for the operations described in association with any of thecomputer-implemented methods described previously, according to oneimplementation. The system 600 includes a processor 610, a memory 620, astorage device 630, and an input/output device 640. Each of thecomponents 610, 620, 630, and 640 are interconnected using a system bus650. The processor 610 is capable of processing instructions forexecution within the system 600. In one implementation, the processor610 is a single-threaded processor. In another implementation, theprocessor 610 is a multi-threaded processor. The processor 610 iscapable of processing instructions stored in the memory 620 or on thestorage device 630 to display graphical information for a user interfaceon the input/output device 640.

The memory 620 stores information within the system 600. In oneimplementation, the memory 620 is a computer-readable medium. In oneimplementation, the memory 620 is a volatile memory unit. In anotherimplementation, the memory 620 is a non-volatile memory unit.

The storage device 630 is capable of providing mass storage for thesystem 600. In one implementation, the storage device 630 is acomputer-readable medium. In various different implementations, thestorage device 630 may be a floppy disk device, a hard disk device, anoptical disk device, or a tape device.

The input/output module 632 includes hardware or hardware and softwarefor interfacing system 600 with the input/output device 640 or otherdevices or interfaces.

While this specification contains many specifics, these should not beconstrued as limitations on the scope of the disclosure or of what maybe claimed, but rather as descriptions of features specific toparticular implementations. Certain features that are described in thisspecification in the context of separate implementations may also beimplemented in combination in a single implementation. Conversely,various features that are described in the context of a singleimplementation may also be implemented in multiple implementationsseparately or in any suitable sub-combination. Moreover, althoughfeatures may be described above as acting in certain combinations andeven initially claimed as such, one or more features from a claimedcombination may in some cases be excised from the combination, and theclaimed combination may be directed to a sub-combination or variation ofa sub-combination.

Similarly, while operations are depicted in the drawings in a particularorder, this should not be understood as requiring that such operationsbe performed in the particular order shown or in sequential order, orthat all illustrated operations be performed, to achieve desirableresults. In certain circumstances, multitasking and parallel processingmay be advantageous. Moreover, the separation of various systemcomponents in the implementations described above should not beunderstood as requiring such separation in all implementations, and itshould be understood that the described program components and systemsmay generally be integrated together in a single software product orpackaged into multiple software products.

A number of implementations have been described. Nevertheless, it willbe understood that various modifications may be made without departingfrom the spirit and scope of the disclosure. For example, various formsof the flows shown above may be used, with steps re-ordered, added, orremoved. Accordingly, other implementations are within the scope of thefollowing claims.

What is claimed is:
 1. A computer-implemented method for providing anenhanced encounter via a holographic virtual assistant, the method beingexecuted by one or more processors and comprising: detecting, by the oneor more processors, an encounter request from a user; selecting, by theone or more processors, a first encounter including a first holographicrepresentation and a first dialog output; providing, by the one or moreprocessors, the first encounter for presentation to the user on theholographic virtual assistant; receiving, by the one or more processorsand from the user, a first user reaction, the first user reactionincluding a first user dialog input and a first user engagement input;training, by the one or more processors and using the first userreaction, a conversational goal model.
 2. The method of claim 1, furthercomprising: selecting, based on the first user reaction and using theconversation goal model, a second encounter including a secondholographic representation and a second dialog output; providing, thesecond encounter for presentation to the user on the holographic virtualassistant.
 3. The method of claim 2, further comprising: determining, bythe one or more processors, an environmental factor for the holographicvirtual assistant; selecting, by the one or more processors and based inpart on the environmental factor, the first encounter.
 4. The method ofclaim 3, further comprising: determining, by the one or more processorsand based on the first user reaction and the environmental factor, thesecond encounter.
 5. The method of claim 4, wherein the environmentalfactor is based in part on one or more of i) a location of the virtualassistant kiosk and a ii) position of the user in relation to thevirtual assistant kiosk.
 6. The method of claim 4, wherein one or moreof the first holographic representation and the second holographicrepresentation includes location information based on the environmentalfactor.
 7. The method of claim 2, wherein the encounter request and thefirst user reaction include one or more contextual clues.
 8. The methodof claim 3, wherein the one or more contextual clues are non-verbalcues.
 9. The method of claim 4, wherein a non-verbal cue is one of i) agesture, ii) a mood expression, iii) user demographic data.
 10. Themethod of claim 1, wherein the conversational goal model includes ahuman model for the user.
 11. The method of claim 1, wherein theholographic virtual assistant is provided for presentation on a virtualassistant kiosk.
 12. The method of claim 7, further comprising:detecting, in an encounter area encompassing the virtual assistantkiosk, the encounter area including the user, an object; determining,based on the object in the encounter area, a conversational goal; andproviding, to the conversational goal model, the conversation goal basedon the object detected in the encounter area.
 13. One or morenon-transitory computer-readable storage media coupled to one or moreprocessors and having instructions stored thereon which, when executedby the one or more processors, cause the one or more processors toperform operations for providing an enhanced encounter via a holographicvirtual assistant, the operations comprising: detecting, by the one ormore processors, an encounter request from a user; selecting, by the oneor more processors, a first encounter including a first holographicrepresentation and a first dialog output; providing, by the one or moreprocessors, the first encounter for presentation to the user on theholographic virtual assistant; receiving, by the one or more processorsand from the user, a first user reaction, the first user reactionincluding a first user dialog input and a first user engagement input;training, by the one or more processors and using the first userreaction, a conversational goal model.
 14. The computer-readable mediumof claim 9, further comprising: selecting, based on the first userreaction and using the conversation goal model, a second encounterincluding a second holographic representation and a second dialogoutput; providing, the second encounter for presentation to the user onthe holographic virtual assistant.
 15. The computer-readable medium ofclaim 10, wherein the encounter request and the first user reactioninclude one or more contextual clues.
 16. The computer-readable mediumof claim 11, wherein the one or more contextual clues are non-verbalcues.
 17. The computer-readable medium of claim 12, wherein a non-verbalcue is one of i) a gesture, ii) a mood expression, iii) user demographicdata.
 18. The computer-readable medium of claim 9, wherein theconversational goal model includes a human model for the user.
 19. Thecomputer-readable medium of claim 9, wherein the holographic virtualassistant is provided for presentation on a virtual assistant kiosk. 20.A system, comprising: one or more sensors; a holographic projector; oneor more processors; and a computer-readable storage device coupled tothe one or more processors and having instructions stored thereon which,when executed by the one or more processors, cause the one or moreprocessors to perform operations for providing an enhanced encounter viaa holographic virtual assistant, the operations comprising: detecting,by the one or more processors, an encounter request from a user;selecting, by the one or more processors, a first encounter including afirst holographic representation and a first dialog output; providing,by the one or more processors, the first encounter for presentation tothe user on the holographic virtual assistant; receiving, by the one ormore processors and from the user, a first user reaction, the first userreaction including a first user dialog input and a first user engagementinput; training, by the one or more processors and using the first userreaction, a conversational goal model.